Residential Rebates Back to Ways to Save Residential Rebates & Incentives ENERGY STAR® Smart Thermostat Receive a $75 rebate when you purchase and install an ENERGY STAR® labeled Smart Thermostat. Thermostat Rebate Insulation Upgrade Upgrade your insulation and get up to $300 back from CU. Insulation Rebate Ways to Save Residential Rebates Commercial Rebates Efficiency Programs Renewable Energy Heating & Cooling Save between $400-$1025 with heating & cooling rebates for ENERGY STAR® efficiency rated systems. Heating & Cooling WaterSense® High Efficiency Toilet Save up to $75 when you purchase & install a WaterSense® High Efficiency Toilet. Toilet Rebate EV-Ready Home Rebate Receive up to a $100 rebate when you install a 240-volt EV-Ready outlet in a new construction home. EV-Ready Home Rebate